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【单选题】
给出下面代码: a = input("").split(",") if isinstance(a,list): print("{} is list".format(a)) else: print("{} is not list".format(a)) 代码执行时,从键盘获得1,2,3,则代码的输出结果是:A.
['1', '2', '3'] is list
B.
执行代码出错
C.
1,2,3 is list
D.
1,2,3 is not list
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举一反三
【单选题】Factory Method (工厂方法)模式的意图是
A.
定义一个用于创建对象的接口，让子类决定实例化哪一个类。将实例化延迟到其子类
B.
为一个对象动态连接附加的职责
C.
你希望只拥有一个对象，但不用全局对象来控制对象的实例化
D.
定义一个操作中的骨架，而将一些步骤延迟到子类中。使得子类可以不改变一个算法的结构即可重定义该算 法的某些特定步骤
【单选题】What instruction does the author have in his mind by asking you to imagine you have a magic wand?
A.
To increase your imagination power.
B.
To conceive a magic trick.
C.
To set up particularly attractive wishes.
D.
To enable you to perform. miracles.
【简答题】 the website design cost as low as possible The website design cost is one of the things that online entrepreneurs are thinking about when they plan to have a business on the Internet. Choosing ...
【简答题】Although cost is one of the most important considerations in material acquisition, ______________ is also vital。
【单选题】What instruction does the author have in his mind by asking you to imagine you have a magic wand?
A.
To increase you imagination power
B.
To conceive a magic trick
C.
To set up particularly attractive wishes
D.
To enable you to perform. miracles.
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